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Variety traits

Uniformity

Uniformity is an indicator of the homogeneity of a seed lot or plants in a crop based on traits such as size, height, maturity date, and habitus. High uniformity ensures even emergence and yield stability, which is critical for variety assessment and product quality.

Mentioned in descriptions 10 270 varieties reference book.

In agronomy and seed production, seed uniformity defines their homogeneity in size, most often thickness, which influences sowing quality. Crop uniformity characterizes the homogeneity of the plant stand in terms of height, phenological stage timing, and general plant habitus, which is important for the efficiency of mechanical harvesting.

During laboratory seed analysis, the indicator is expressed as a percentage representing the sum of the two most representative adjacent fractions. In variety testing, plant uniformity is evaluated visually or through the coefficient of variation of morphological traits. The lower the coefficient of variation, the higher the level of variety uniformity is considered to be.

The level of this trait depends on both the genetic characteristics of the variety and environmental conditions, including agronomic practices and meteorological factors during the seed formation period. Material with a uniformity of at least 80% is considered standard, and values below this threshold require mandatory calibration of the lot before sowing.

Sources10

Breakdown by crop

Tomato Uniformity 81 Uniformity — White Cabbage 79 Barley grain uniformity 68 Carrot uniformity 51 Potato Uniformity 47 Uniformity — Cauliflower 45 Uniformity of lettuce 40 Pepper uniformity 38 Radish uniformity 31 Uniformity — Onion 30 Uniformity of cucumber 23 Sunflower uniformity 21 Uniformity — Onion 20 Uniformity — soft wheat 19 Uniformity — Broccoli 16 Triticale Uniformity 15 Watermelon Uniformity 14 Bean uniformity 14 Uniformity — Brussels sprout 13 Uniformity — Red Cabbage 12 Uniformity of zucchini 11 Uniformity — Leek 10 Uniformity of Chrysanthemum 10 Pea uniformity 10

Found in these crops

Tomato 944 Bell pepper 415 Lettuce 371 Cucumber 272 Potato 256 White cabbage 242 Melon 231 Carrot 215 Cauliflower 192 Field pumpkin 149 Maize 146 Common bean 146

Varieties that feature this in their description

Selection based on the description text, not official resistance ratings: such data is not available in registers. Mention indicates that the trait is discussed in the variety's sources; see the variety's profile for details on what is specifically stated.

NSG 9

Active

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

Tufaro Nicola

2 records

PHELS02

Active

Philodendron bipinnatifidum Schott ex Endl. · Lacy tree philodendron

Elstgeest Youngplants V.O.F.

3 records

P211R

Active

Helianthus annuus L. · Sunflower

Hibrisol S.L., Panam France S.A.S.

2 records

Ph1csv

Active

Zea mays L. · Maize

PIONEER HI-BRED INTERNATIONAL

2 records

PENTHER

Terminated

Diascia Link & Otto · Twinspur

SIDNEY JAMES JONES

2 records

Pha262

Protection expired

Helianthus annuus L. · Sunflower

PIONEER HI-BRED INTERNATIONAL

2 records

Nonis

Active

Neoregelia L.B. Sm. · Neoregelia

Skotak, Jr., Chester|Alajuela, Costa Rica

2 records

Panorama

Active

Pastinaca sativa L. · Parsnip

Elsoms Seeds

2 records

OENE

Active

Taxus x media Rehder · Anglo-Japanese yew

Handelskwekerij de Buurte B.V.

2 records

Minta

Active

Chamaecyparis pisifera (Siebold & Zucc.) Endl. · Sawara cypress

Rietberg Henrik Christiaan Cozijn

2 records

MIEKE

Active

Prunus L. · Plum

Johannes Jacobus van den Brandhof

3 records

OVROCKS16

Application submitted

Aristaloe aristata (Haw.) Boatwr. & J. C. Manning · Lace aloe

Ovata B.V.

2 records

Lunolemon

Active

Calluna vulgaris (L.) Hull · Common heather

Christoph Kappert

2 records

Meru Improved

Active

Kalanchoe blossfeldiana Poelln. · Flaming Katy

Vlielander Ike|De Lier, NL

2 records

Margarita

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

J.W.P. Kolk Bloemen B.V.

2 records

Nemapi

Terminated

Nemesia Vent. · Nemesia

Syngenta Seeds B.V.

2 records

MP21

Terminated

Petunia Juss. · Petunia

Graham N. Brown

2 records

MACGER002

Active

Geranium maculatum L. · Spotted geranium

MacGregor Alasdair,MacGregor Elizabeth

2 records

Martine Scarlet

Terminated

Celosia L. · Cockscomb

Bernard Rene van den Bosch

2 records

MACGER001

Active

Geranium pratense L. x Geranium psilostemon Ledeb.

MacGregor Alasdair,MacGregor Elizabeth

2 records

LAZOST1803

Active

Osteospermum L. x Dimorphotheca Vaill. ex Moench

Nebelmeir Johannes

2 records

Mayon

Active

Kalanchoe blossfeldiana Poelln. · Flaming Katy

Vlielander Ike J.|De Lier, NL

2 records

MGC 1008

Active

Cannabis sativa L. · Hemp

MARCEL DE WIT

2 records

Lovely Day

Active

Astilbe x arendsii H. Junge · Arends astilbe

Verduin Harrie

2 records

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